From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-ew0-f219.google.com ([209.85.219.219]:32951 "EHLO mail-ew0-f219.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753514Ab0A0NOS convert rfc822-to-8bit (ORCPT ); Wed, 27 Jan 2010 08:14:18 -0500 Received: by ewy19 with SMTP id 19so425539ewy.21 for ; Wed, 27 Jan 2010 05:14:17 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <20100126193726.00bcbc00@tele> References: <20100126170053.GA5995@pathfinder.pcs.usp.br> <20100126193726.00bcbc00@tele> Date: Wed, 27 Jan 2010 10:14:16 -0300 Message-ID: Subject: Re: Setting up the exposure time of a webcam From: leandro Costantino To: Jean-Francois Moine Cc: Linux Media Mailing List Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-media-owner@vger.kernel.org List-ID: HI Nicolau.... remember to send a SOB if the patch is working, and any change let me know so i can test with others t613 users. Best Regards On Tue, Jan 26, 2010 at 3:37 PM, Jean-Francois Moine wrote: > On Tue, 26 Jan 2010 15:00:53 -0200 > Nicolau Werneck wrote: > >> Hello. I have this very cheap webcam that I sent a patch to support on >> gspca the other day. The specific driver is the t613. >> >> I changed the lens of this camera, and now my images are all too >> bright, what I believe is due to the much larger aperture of this new >> lens. So I would like to try setting up a smaller exposure time on the >> camera (I would like to do that for other reasons too). >> >> The problem is there's no "exposure" option to be set when I call >> programs such as v4lctl. Does that mean there is definitely no way for >> me to control the exposure time? The hardware itself was not designed >> to allow me do that? Or is there still a chance I can create some C >> program that might do it, for example? >        [snip] > > Hello Nicolau, > > There are brightness, contrast, colors, autogain and some other video > controls for the t613 webcams. You must use a v4l2 compliant program to > change them, as vlc or v4l2ucp (but not cheese). > > Regards. > > -- > Ken ar c'hentań |             ** Breizh ha Linux atav! ** > Jef             |               http://moinejf.free.fr/ > -- > To unsubscribe from this list: send the line "unsubscribe linux-media" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at  http://vger.kernel.org/majordomo-info.html >